Oh boy, one more thing to worry about, radioactive smoke

"The wildfires that have ravaged Idaho for over a month are now bringing new fears as the fires have burned through three radioactive mining sites and are heading towards a fourth, Reuters reports.

The news agency reports that the four sites hold radioactive thorium and uranium. One of the sites is a defunct uranium mine, and the buildings on the site, one of which has burned, have never been decontaminated.
http://www.commondreams.org/headline/2012/09/21-5